Voltammetric Detection of Mercury Ions at Poly(azulene-EDTA)-like Screen Printed Modified Electrodes

In recent years, many applications have been developed for the detection of different toxic metals (As, Cd, Cu, Hg, Ni, Pb) in water samples. The classic analytical methods (ICP-MS, AAS with graphite furnace, ICP-EOS ultrasonic nebulizer) not only require a longer analysis time (pretreatment sample and analysis), but also costs involved are higher as result expensive equipment, associated method validation process qualified staff. use modified electrodes trace analysi from wastewater samples represents modern approach which can provide accurate, fast results selectivity sensitivity. Thus, here we present development previously obtained glassy carbon-modified based on poly(2,2′-(ethane-1,2-diylbis((2-(azulen-2-ylamino)-2-oxoethyl)azanediyl))diacetic acid, (polyL) laboratory-scale studies. order to analyze Hg(II) ion content aqueous samples, an assembly system made carbon screen-printed (SPEs) polyL selective complexing polymeric films coupled portable potentiostat was used. ions accomplished by chemical accumulation open circuit followed anodic stripping using differential pulse voltammetry technique. calibration curve situated range 20 ppb 150 (y = 0.0051x + 0.123, R2 0.9951), limit 6 ppb. precision value lower 20%, while upper limit, 10.5%. novelty consists low cost analysis, possibility real-time reliable information about concentration small device.